Winder.



CLARENCE N. OHILDS, OF LOWELL, MASSACHUSETTS, ASSIGNOR OF' ONE- HALF TOOLIVER H. MOULTON,

OF LOWELL, MASSACHUSETTS.

W INDER.

Specification of Letters Patent.

Patented Nov. 28,1905.

Application filed Apri1'17, 1905. Serial No. 256,149.

To all whom it may concern/.

Be it known that I, CLARENCE N. CHILDs, a 1 citizen of the UnitedStates, residing'at Lowell, in the county of Middlesex and Commonwealthof Massachusetts,-have invented a certain new and useful Improvement in.Winders, of which the following is a specification,

This invention, relates to winders or machines for winding yarn (orthread) upon copholdersas bobbins,tubes,cones,or spindles,- into conicalcylindrical cops or other packages. Usually in machines of the kindherein de scribed the yarn is drawn by the rotation of a cop-holder-as abobbin, tube, or cone through a tension device commonly called thetension, through adrop or drop-wire suspended on the yarn, and through atravers i'ng yarn-guide to said cop-holder. When the yarn in such amachine is exhausted or broken between the tension and the cop-holder,the

drop falls into the path of a moving piece and is thereby moved toeflect or permit the operation of the stop-motion. In winding-machinesof the class referred to the cop-holder and cop are usually rotated byfrictional contact with a positively-driven drum and the stop-motion isoperated not to stop the drum, but to raise the cop out of such contact.Sometimes a. yarn-scraper is interposed between the drop and theyarn-guide proper to remove lint, waste, and short pieces of yarnfromthe yarn being wound and to arrest knots of such a size as tointerfere with the subsequent uses of the yarnin hosiery-yarn, forinstance, to

prevent knots too large to pass through the needles of aknitting-machine from being Wound into the cop. This yarn-scraper iscommonly -called a yarn-guide? but from its function in the machinehereinafter descibed it might properly be called a yarnscraper andknot-arrester. Said guide, scraper, or catcher consists of two platesarranged in the sameplane and slightly sepa rated to scrape or clean theyarn passing be: tween said plates and to prevent the passage betweenthem of a knot or bunch exceeding a predetermined size. Where a knot orbunch is stopped by the. yarn-scraper, the yarn is broken between thescraper and the cop; but .the knot or bunch frequently becomes wedgedbetween the plates, so that the yarn is held "stretched between thescraper and the tension device and does not permit the falling of thedrop-wire and the operation of the stop-m0- tion. -The cop is thereforenot lifted out of contact with the driving-drum and continues torevolve, which causes a softening of the necessary to unwind and rewinda part of the cop. When the cop is not raised from the drum by thestop-motion,there is nothing to indicate *to the attendant, without acareful inspection, that the yarn is broken. It will be understood thatthere are a plurality of driving-drums and cops in a single frame ormachinein the largest machines as many as one hundred drums, arrangedfifty on a side thus making the machine from thirty to forty feet inlength, so that if the operative is busy in piecing up the broken yarnsat one end of the Winder it would be impossible for her to see thebroken yarns at the other end on the same side or to see broken threadson the other side of the machine at a comparatively short distance away.Hence the cop is likely to revolve for a considerable time after theyarn is broken between the yarn-scraper and the cop. The use ofthe,yarnscraper, therefore, to a great extent prevents the operation ofthe stop-motion.

I provide means for permitting the fall of the drop-wire when a knot'orbunch in the yarn.

the winding of the yarn on the cop will we vent the yarn between thescraper and the tension device from slackening sufliciently 'to lowerthe drop-wire. When the yarn stops running through'the scraper, theapproach of the tension device toward the drop-wire slackens the yarnand allows the drop-wire to fall;

In.the accompanying drawings, Figure 1 is a transverse section of a partof a winder, showing in side elevation all the parts neces-- sary to theunderstanding of this invention; Fig. 2, a front elevation of thedrop-wire and its holder; Fig. 3, a front elevation ofa yarnscraper;Fig. 4, a front elevation of a tension device and its supportingrock-shaft,

- out of contact with the drum D, the lever F,

turning on a fixed axis fand carrying a weight f at one end and at theother end at f 2 hearing against the under side of the cradle e, thestop-motion slide Gr, pivoted at g to the lever F between thefulcrumfand the weightf and supported in a stationary fork 0, whichpermits the longitudinal movement of said slidethese parts are all ofthe usual construction and operation, abolt g adjustable in the slot 9,securing to said slide a downhanging arm g having a lateral extension g,the front of which normally rests against the rear end of the normallyhorizontal part 7b of the drop- -wire holder 7a, as indicated by fulllines in Fig. 1, the drop-wireH having avertical pivotslot 7L whichallows it. to be held out of the path of the projections j on theknock-off wheel J, driven bya beltj from a pulley on the main shaft. Theyarn-guide K, caused to traverse by the usual means to distribute theyarn over the length of the cop E, the yarn-scraper, and knot-catcher L,also commonly called a yarn-guide and consisting of two platesZ Z, lyingin the same substantially vertical plane and separated by a narrowhorizontal slit Z through which the yarn passes from the dropwire, thetension device M, Fig. 4:, represented as consisting of two disks m m,pressed against a yarn N, passing between them by a spring m are all ofthe usual construction and operation except as hereinafter specified.

The lower plate Z of the yarn-scraper is movable in the usual manner toallow the thread to be passed through the yarn-scraper.

The tension-disks m m are supported on a horizontal rod m which projectshorizontally from a bracket m, rigidly secured to the horizontaltension-rail m, which is usually immovably held from turning.

The yarn passes from a skein, ball, or from a bobbin 0, as hereinrepresented, between the tension-disks m on through an eye lbs, withwhich the upper end of the drop-wire H is provided, through aknot-scraper L and yarn-guide K to the cop E, the drop-wire being heldin the position shown in full lines in Fig. l by the tension of the yarnbetween the tension device and the cop.

Instead of a stationary tension-rail m I use a rock-shaft that is, Iarrange said rail to turn in the brackets a, which commonly support saidrail, (only one such bracket being show n,) and I provide said rail witha radial arm m rigidly secured thereto and connected by a link m to awrist-pin m on a gear m the latter being engaged by a pinion m", rotarywith the pulley m said pulley being driven by a band m from anotherpulley 1/1 fast on the main shaft B. The pulley m and pinion m are bothfast on a short shaft m which turns in a bracket m, bolted to an uprightpart a of the frame A.

In order that the distance which the tension moves be regulated and thatthe speed of its movement toward and from the drop-wire may be adjusted,the arm m of the tension rock-shaft is provided with a plurality ofholes m at different distances from said rockshaft, in either one ofwhich holes the stud or bolt m which connects the upper end of the linkm to said arm, may be inserted.

Obviously the rotation of the shaft B causes the tension to movealternately toward and from the drop-wire H. The parts which contributeto rock the rail will be so proportioned as to move the tension towardthe dropwire H at a speed not exceeding the normal feed of the yarn, soas not to slacken the yarn when running.

When a knot or bunch is wedged in the scraper, the yarn is slackened, asindicated by dotted lines in Fig. 1, at the next movement of the tensiontoward the drop-wire, allowing the drop-wire to fall into the path of aprojection j on the knock-off wheel J, causing the rear end of thedrop-wire holder to be lifted above the foot g of the arm 9 of the slideG, whereupon the weighted end of the lever F is depressed and the frontend of said lever is raised, lifting the cradle and moving the cop outof contact with the drum D, said cop then coming to rest immediately.

I claim as my invention- 1. The combination of a tension device, aknot-arresting yarn-scraper, winding means for drawing a yarnsuccessively through said tension device and said scraper, a dropnormally suspended on said yarn between said tension device and saidscraper, automatic means for slackening said yarn between said tensiondevice and said scraper, when the progress of said yarn is interruptedby a knot or bunch at said scraper, to permit the falling of said drop,and means operated by the falling of said drop to stop the winding ofsaid yarn.

2. The combination of a tension device, a knot-arresting yarn-scraper,winding means for drawing yarn successively through said tension deviceand said scraper, a drop normally suspended on said yarn between saidtension device and said scraper, automatic means for continuouslyalternately shortening and lengthening the distance between said tensiondevice and said scraper, to slacken said yarn between said tensiondevice and said scraper when the progress of said yarn is interrupted bya knot or bunch at said scraper,

to permit the falling of said drop, and means operated by the falling ofsaid drop. to stop the winding of said yarn.

3. The combination in a winding-machine; of a cop-holder, means ofrotating the same,- a stop-motion therefor, a tension device, aknot-arresting yarn-scraper, a drop normally suspended by the tension ofthe yarn'or thread passing through said tension device and said scraper,means for operating said stop-motion 1 by the falling of said drop, andautomatic means" for continually varying the distance between saidscraper and said tension device. 4;. The combination of a driving drum,

means for rotating thesame. a cop-holder normally rotated by frictionalcontact between said drum and said holder or cop, a knot-arvice and saidscraper and operated upon thefalling of said drop by the slackingof-said yarn, and saiddrop.

In testimony whereof I have'aflixed my signature in presence of twowitnesses.

CLARENCE N. OHILDS.

Witnesses:

ALBERT M. MOORE, STEPHEN T. WHITTIER.

